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AOBEN Cordless Angle Grinder 4-1/ vs Milwaukee 2888-20 18V Cordless 4.5"/5" Grinder

Updated July 2026 — AOBEN Cordless Angle Grinder 4-1/ wins on rank and speed, Milwaukee 2888-20 18V Cordless 4.5"/5" Grinder wins on price and weight.

The AOBEN Cordless Angle Grinder offers excellent value for budget-conscious users, while the Milwaukee 2888-20 provides advanced features for professionals.

Why AOBEN Cordless Angle Grinder 4-1/ is better

Price

AOBEN is $79.99 compared to Milwaukee's $141.08.

Speed

AOBEN has a max speed of 9,500 RPM.

Battery

AOBEN includes two 4.0Ah batteries.

Why Milwaukee 2888-20 18V Cordless 4.5"/5" Grinder is better

Performance

Milwaukee has variable speed settings.

Safety

Milwaukee features a quick brake system.

Brand

Milwaukee is recognized for professional-grade tools.

Overall score

AOBEN Cordless Angle Grinder 4-1/
75
Milwaukee 2888-20 18V Cordless 4.5"/5" Grinder
82

Specifications

SpecAOBEN Cordless Angle Grinder 4-1/Milwaukee 2888-20 18V Cordless 4.5"/5" Grinder
Motor TypeBrushlessBrushed
Variable SpeedNoYes
Max RPM95008500
Brake SystemNoYes
Battery IncludedYesNo

Dimension comparison

AOBEN Cordless Angle Grinder 4-1/Milwaukee 2888-20 18V Cordless 4.5"/5" Grinder

Overview of the AOBEN Cordless Angle Grinder

The AOBEN Cordless Angle Grinder is priced at $79.99, making it a budget-friendly option for users seeking a versatile tool. It features a brushless motor that enhances its longevity and efficiency. The grinder also comes with two battery packs, allowing for extended usage without the need for constant recharging.

The AOBEN grinder is designed for a variety of applications, including metal cutting, grinding, and polishing. With a sales rank of 15,649, it has garnered attention among users looking for a reliable and cost-effective tool. This angle grinder is well-suited for both indoor and outdoor tasks, providing users with the convenience of cordless operation.

Overview of the Milwaukee 2888-20 Grinder

The Milwaukee 2888-20 Grinder is a premium tool priced at $141.08, significantly higher than the AOBEN option. This model delivers a maximum speed of 8,500 RPM and features a variable speed setting with five options. The quick brake system stops the wheel in less than two seconds, ensuring enhanced safety during operation.

With a sales rank of 11,053, the Milwaukee grinder is recognized for its performance and reliability in various applications. Designed for professionals and serious DIYers, it is a robust choice for those needing a powerful grinder that can handle demanding tasks.

Performance Comparison

When it comes to performance, the AOBEN grinder offers a maximum speed of 9,500 RPM, which is higher than the Milwaukee’s top speed of 8,500 RPM. This difference may provide the AOBEN model with a slight edge in certain cutting and grinding scenarios. However, the Milwaukee's variable speed settings allow for more controlled operation, which can be beneficial for precision tasks.

Both grinders are equipped with features to enhance user experience; the AOBEN's brushless motor promises less energy consumption and a longer lifespan, while the Milwaukee's quick brake system improves safety. Ultimately, the choice between these two tools will depend on whether users prioritize raw speed or controlled performance.

Battery and Power Source

The AOBEN Cordless Angle Grinder includes two 4.0Ah battery packs, which offer substantial runtime and the freedom to work without being tethered to a power outlet. This makes it an appealing choice for users who require mobility and extended operation time.

In contrast, the Milwaukee 2888-20 is sold as a tool-only option, meaning users must purchase the battery and charger separately. This could lead to a higher overall investment, especially since the Milwaukee is priced around $141.08 compared to AOBEN's more inclusive offer at $79.99. The added cost may deter casual users who are looking for an all-in-one solution.

Design and Usability

The AOBEN grinder boasts a compact and ergonomic design, making it comfortable to handle during extended use. It comes with two wheel guards for added safety, catering to users who prioritize protection while working. The spindle lock feature also enables quick wheel changes, enhancing usability.

The Milwaukee grinder, while slightly heavier, is designed with tool-free guard adjustments and a paddle switch for ease of operation. This design aspect appeals to professionals who need to make quick adjustments on the job. Both grinders emphasize user comfort, but the choice may depend on individual preferences regarding weight and grip style.

Price Comparison

The AOBEN grinder is priced at $79.99, making it about 43% cheaper than the Milwaukee 2888-20, which retails for $141.08. This price difference may be significant for users on a budget or those who do not require the advanced features offered by Milwaukee.

While the Milwaukee grinder offers premium features and a higher RPM, the AOBEN grinder provides excellent value for those seeking a reliable tool without breaking the bank. The cost-effectiveness of the AOBEN model might be particularly attractive for homeowners or DIY enthusiasts who need a dependable grinder for occasional use.

Brand Reputation and Sales Rank

Both brands have established reputations in the power tool industry, with AOBEN and Milwaukee known for their quality. The AOBEN grinder ranks at 15,649 in sales, indicating a steady demand, while the Milwaukee 2888-20 has a stronger sales rank of 11,053, suggesting it might be a preferred choice among professionals.

The higher sales rank of the Milwaukee model might reflect its suitability for commercial use, while the AOBEN model appeals to a broader audience, including those who are new to using angle grinders. Brand loyalty may also play a role in the purchasing decision, as Milwaukee has a long-standing reputation for high-performance tools.

Which should you buy?

Choosing between the AOBEN Cordless Angle Grinder and the Milwaukee 2888-20 depends on your specific needs and budget. If you're looking for a cost-effective, versatile tool for general use, the AOBEN model at $79.99 offers excellent value with its high RPM and included battery packs. However, if you require a robust, professional-grade grinder with advanced features like variable speed and rapid braking, the Milwaukee grinder is worth the investment at $141.08.

Ultimately, if your priority is budget and basic functionality, the AOBEN is the clear choice. Conversely, for those who can justify the extra cost for enhanced performance and features, the Milwaukee 2888-20 stands out as a superior option.